Sheet-metal bolt structure.



N0. 838,644. PATENTED DEC. '18, 1906. J. S. RAPSON SHEET METAL BOLTSTRUCTURE.

APPLICATION FILED MAE.29,1906.

nu: NURRIS PETERS 00., WASHINGTON, o. c

JOHN S. RAPSON, OF ELKINS PARK, PENNSYLVANIA.

SHEET-=METAL BOLT STRUCTURE.

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Specification of Letters Patent Patented Dec. 18, 1906.

Application filed March 29, 1906- Serial No. 308,634.

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Be it known that 1, JOHN S. RAPSON, of Elkins Park, Montgomery county,and State of Pennsylvania, have invented an Improve- 5 ment inSheet-Metal Bolt Structures, of

which the following is a specification.

My invention has reference to sheet-metal bolt structures; and itconsists of certain improvements which are fully set forth in thefollowing specification, and shown in the accompanying drawings, whichform a part thereof.

The object of my invention is to provide a construction of boltstructure or casing specifically adapted for window-shutters when madefrom sheet metal, which while embodying lightness coupled with strengthshall also be inexpensive to manufacture.

More particularly, my invention consists in a metal body formed of sheetmetal stamped into proper form to provide two side bars and a series ofcross-bars, part of which are depressed and part raised to form alongitudinal bolt-channel between and parallel to the side bars,combined with a movable bolt slidably fitting the channel and having alateral part extending between two adjacent cross-bars to limit themovement of the bolt. A, My improvement further comprises a 0 keeper forthe bolt when formed of two side bars and a series of cross-bars, partof which are depressed and part raised to form a channel into which theend of the bolt may enter.

My invention also embodies details of construction which, together withthe features above specified, will be better understood by reference tothe drawings, in which Figure 1 is a plan view of a shutter-boltembodying my invention. Fig. 2 is a longitudinal section of the same.Fig. 3 is a cross-section of the same on line 3 3. 4 is a cross-sectionof the same on line 4 4. Fig. 5 is a plan view of the stamped sheetbefore being bent into the finished form by the dies, and Fig. 6 is aperspective view of the keeper.

There are two parts of the boltnamely, the body and its bolt proper andthe keeper. The general construction of the body and the keeper are thesame, and a description of the former will equally describe the latter.

Referring more particularly to the body and bolt portion of thestructure, the body consists of two parallel side bars A A, having outerdownwardly-extending flanges B B,

and said bars A A are connected by a series body.

of cross-bars C D, the former being raised above the side bars and thelatter depressed, so that a rectangular or other suitablyshaped channelJ is formed for the reception of the bolt K. On the end of the body nextto the keeper the cross-bars O D are close together but at the other endI prefer to omit the cross-bar D between the last two crossbars 0 and inlieu thereof only provide the downward flanges E E, of the same depth asthe flanges B, as clearly shown in Fig. 4.. This construction isequivalent to forming the long cross-bar D at this place and thenremoving the bottom plate to form an open space F. The advantage of thisis'that it reduces the weight and leaves a clearancespace below the boltK where the knob or handle L is riveted to the bolt, therebyfacilitating the riveting of the knob in place and also providing aclearance for the projecting riveted end under the bolt. This bolt Kslides in the channel J formed by these cross-bars C and D and theflanges E, which latter not only strengthen the side bars, but guide therear end of the bolt K. After the bolt K has been slipped into thechannel J the knob or transverse part L is riveted to it, as shown, andacts as a means for moving the bolt and also for limiting the movementof the bolt, the said knob being restricted in its travel by the twocross-bars C C at the end of the body adjacent to the flanges E E.

By an examination of Figs. 3 and 4 it will be seen that the bottoms ofthe flanges B E and cross-bars D are all on the same level and adaptedto rest evenly upon the wood of the shutter. The side flanges B andcenter flanges E and sides of the cross-bars D form grooves G G, whichgreatly strengthen the Moreover, the screw-holes I are placed in theside bars A, and the downward pressure of the screws H is resisted bythe grooved shape of these side bars, as will be readily understood byreferring to Fig. 3, where a screw is shown in dotted lines. Thecross-bar D at the extreme end of the body may also have a screw-hole I.I have shown these screw-holes as countersunk, but this is notnecessary. Ordinarystamped holes may be used and round-head screwsemployed, if so desired.

Referring now to the keeper, (shown fully in Fig. 6,) the side bars Aare provided with the side flanges B, and the cross-bars C and D arebent in opposite directions to form the bolt-channel between them, thebars Dbeing depressed to the level of the bottom of the side flanges Btoform the grooves G. The crosssection of the keeper will correspond toa cross-section of the body of the bolt portion and is represented byFig. 3, which also represents a cross-section of the body of the boltportion with the bolt K omitted. The rear bar D of the keeper isprovided with a screwhole I, and similar screwholes are provided in theside bars A in transverse alinement with the other depressed bar D.

WVhile I have shown the screw-holes I located where I deem the mostsatisfactory po sitions in the body and keeper to prevent dis tortionunder the clamping action of the screws,these screw-holes maybe locatedin any other position found convenient or desirable.

WVhile I prefer the construction shown, I do not restrict myself to theminor details, as these may be modified without departing from thespirit of my invention.

Having now described my invention, wh at I claim as new, and desiretosecure by Letters Patent, is

1. A bolt structure formed of stamped sheet metal and each having twoparallel flanged side bars connected by a series of cross-bars, part ofwhich are depressed and part raised to form the bolt-channel, combinedwith a slidable bolt fitted to the channel in the body portion.

2. A bolt structure formed of stamped sheet metal and each having twoparallel flanged side bars connected by a series of cross-bars, part ofwhich are depressed and part raised to form the bolt-channel, combinedwith a slidable bolt fitted to the channel in the body portion, andhaving a lateral extension projecting in the space between two adjacentcross-bars to limit the movement of the bolt.

3. A bolt structure formed of stamped sheet metal and each having twoparallel flanged side bars connected by a series ol crossbars, part ofwhich are depressedand part raised to form the bolt-channel, and inwhich the bottom of the depressed cross-bars are on a level with thebottom of the side flanges to form grooves under the side bars, combinedwith a slidable bolt fltted to the channel in the body portion.

4. In a bolt, the body formed of stamped sheet metal consisting of twoparallel flanged side bars and. a series of cross-bars connecting them,a portion of the cross-bars being depressed and a portion raised to forma boltchannel, and two guide-flanges E bounding an open space F to therear of said cross-bars for supporting the side bars and guiding thebolt, combined with a sliding bolt movably supported in said channel andbetween the guide-flanges E and having a handle at a point above theopening F and between the guide-flanges E.

5. A bolt-body formed of stamped sheet metal and consisting of twoflanged side bars connected by a series of alternately depressed andraised cross-bars and rearward inner flanges E E to the side bars toconstitute a bolt-channel.

6. In a bolt, the body formed of side bars A having outer flanges B andinner flanges E and connecting cross-bars C D respectively above andbelow the level of the side bars, in combination with a bolt K guided bythe cross-bars and between the side bars and provided with a knobarranged between the inner flanges E and two of the cross-bars to limitthe movement of the bolt.

In testimony of which invention I here unto set my hand.

JOHN S. RAPSON.

Witnesses:

R. M. HUNTER, R. M. KELLY.

